/Engine/Source/Editor/ViewportInteraction/Public/ViewportWorldInteraction.h
Sets the list of objects that this system will be responsible for transforming when interacting using the gizmo or directly on the objects
void SetTransformables ( [TArray](API\Runtime\Core\Containers\TArray)< [TUniquePtr](API\Runtime\Core\Templates\TUniquePtr)< [FViewportTransformable](API\Editor\ViewportInteraction\FViewportTransformable) > > && NewTransformables, const bool bNewObjectsSelected )